1 files changed, 224 insertions, 0 deletions
diff --git a/src/plugins/platforms/xlib/qxlibwindowsurface.cpp b/src/plugins/platforms/xlib/qxlibwindowsurface.cpp
new file mode 100644
index 0000000000..513f10dc6a
--- /dev/null
+++ b/src/plugins/platforms/xlib/qxlibwindowsurface.cpp
@@ -0,0 +1,224 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qxlibwindowsurface.h"
+#include "qxlibintegration.h"
+
+#include <QtCore/qdebug.h>
+#include <QWindowSystemInterface>
+
+#include "qxlibwindow.h"
+#include "qxlibscreen.h"
+#include "qxlibdisplay.h"
+
+# include <sys/ipc.h>
+# include <sys/shm.h>
+# include <X11/extensions/XShm.h>
+
+QT_BEGIN_NAMESPACE
+
+
+struct QXlibShmImageInfo {
+    QXlibShmImageInfo(Display *xdisplay) :  image(0), display(xdisplay) {}
+    ~QXlibShmImageInfo() { destroy(); }
+
+    void destroy();
+
+    XShmSegmentInfo shminfo;
+    XImage *image;
+    Display *display;
+};
+
+
+#ifndef DONT_USE_MIT_SHM
+void QXlibShmImageInfo::destroy()
+{
+    XShmDetach (display, &shminfo);
+    XDestroyImage (image);
+    shmdt (shminfo.shmaddr);
+    shmctl (shminfo.shmid, IPC_RMID, 0);
+}
+#endif
+
+void QXlibWindowSurface::resizeShmImage(int width, int height)
+{
+
+#ifdef DONT_USE_MIT_SHM
+    shm_img = QImage(width, height, QImage::Format_RGB32);
+#else
+
+    QXlibScreen *screen = QXlibScreen::testLiteScreenForWidget(window());
+    if (image_info)
+        image_info->destroy();
+    else
+        image_info = new QXlibShmImageInfo(screen->display()->nativeDisplay());
+
+    Visual *visual = screen->defaultVisual();
+
+    XImage *image = XShmCreateImage (screen->display()->nativeDisplay(), visual, 24, ZPixmap, 0,
+                                     &image_info->shminfo, width, height);
+
+
+    image_info->shminfo.shmid = shmget (IPC_PRIVATE,
+          image->bytes_per_line * image->height, IPC_CREAT|0777);
+
+    image_info->shminfo.shmaddr = image->data = (char*)shmat (image_info->shminfo.shmid, 0, 0);
+    image_info->shminfo.readOnly = False;
+
+    image_info->image = image;
+
+    Status shm_attach_status = XShmAttach(screen->display()->nativeDisplay(), &image_info->shminfo);
+
+    Q_ASSERT(shm_attach_status == True);
+
+    shm_img = QImage( (uchar*) image->data, image->width, image->height, image->bytes_per_line, QImage::Format_RGB32 );
+#endif
+    painted = false;
+}
+
+
+void QXlibWindowSurface::resizeBuffer(QSize s)
+{
+    if (shm_img.size() != s)
+        resizeShmImage(s.width(), s.height());
+}
+
+QSize QXlibWindowSurface::bufferSize() const
+{
+    return shm_img.size();
+}
+
+QXlibWindowSurface::QXlibWindowSurface (QWidget *window)
+    : QWindowSurface(window),
+      painted(false), image_info(0)
+{
+    xw = static_cast<QXlibWindow*>(window->platformWindow());
+//    qDebug() << "QTestLiteWindowSurface::QTestLiteWindowSurface:" << xw->window;
+}
+
+QXlibWindowSurface::~QXlibWindowSurface()
+{
+    delete image_info;
+}
+
+QPaintDevice *QXlibWindowSurface::paintDevice()
+{
+    return &shm_img;
+}
+
+
+void QXlibWindowSurface::flush(QWidget *widget, const QRegion &region, const QPoint &offset)
+{
+    Q_UNUSED(widget);
+    Q_UNUSED(region);
+    Q_UNUSED(offset);
+
+    if (!painted)
+        return;
+
+    QXlibScreen *screen = QXlibScreen::testLiteScreenForWidget(widget);
+    GC gc = xw->graphicsContext();
+    Window window = xw->xWindow();
+#ifdef DONT_USE_MIT_SHM
+    // just convert the image every time...
+    if (!shm_img.isNull()) {
+        Visual *visual = DefaultVisual(screen->display(), screen->xScreenNumber());
+
+        QImage image = shm_img;
+        //img.convertToFormat(
+        XImage *xi = XCreateImage(screen->display(), visual, 24, ZPixmap,
+                                  0, (char *) image.scanLine(0), image.width(), image.height(),
+                                  32, image.bytesPerLine());
+
+        int x = 0;
+        int y = 0;
+
+        /*int r =*/  XPutImage(screen->display(), window, gc, xi, 0, 0, x, y, image.width(), image.height());
+
+        xi->data = 0; // QImage owns these bits
+        XDestroyImage(xi);
+    }
+#else
+    // Use MIT_SHM
+    if (image_info && image_info->image) {
+        //qDebug() << "Here we go" << image_info->image->width << image_info->image->height;
+        int x = 0;
+        int y = 0;
+
+        // We could set send_event to true, and then use the ShmCompletion to synchronize,
+        // but let's do like Qt/11 and just use XSync
+        XShmPutImage (screen->display()->nativeDisplay(), window, gc, image_info->image, 0, 0,
+                      x, y, image_info->image->width, image_info->image->height,
+                      /*send_event*/ False);
+
+        screen->display()->sync();
+    }
+#endif
+}
+
+// from qwindowsurface.cpp
+extern void qt_scrollRectInImage(QImage &img, const QRect &rect, const QPoint &offset);
+
+bool QXlibWindowSurface::scroll(const QRegion &area, int dx, int dy)
+{
+    if (shm_img.isNull())
+        return false;
+
+    const QVector<QRect> rects = area.rects();
+    for (int i = 0; i < rects.size(); ++i)
+        qt_scrollRectInImage(shm_img, rects.at(i), QPoint(dx, dy));
+
+    return true;
+}
+
+
+void QXlibWindowSurface::beginPaint(const QRegion &region)
+{
+    Q_UNUSED(region);
+    resizeBuffer(size());
+}
+
+void QXlibWindowSurface::endPaint(const QRegion &region)
+{
+    Q_UNUSED(region);
+    painted = true; //there is content in the buffer
+}
+QT_END_NAMESPACE